320217 has 4 divisors (see below), whose sum is σ = 426960. Its totient is φ = 213476.

The previous prime is 320213. The next prime is 320219. The reversal of 320217 is 712023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320217 - 2² = 320213 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 320196 and 320205.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320217.

It is not an unprimeable number, because it can be changed into a prime (320213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53367 + ... + 53372.

It is an arithmetic number, because the mean of its divisors is an integer number (106740).

2³²⁰²¹⁷ is an apocalyptic number.

It is an amenable number.

320217 is a deficient number, since it is larger than the sum of its proper divisors (106743).

320217 is a wasteful number, since it uses less digits than its factorization.

320217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106742.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 320217 is about 565.8771951581. The cubic root of 320217 is about 68.4144954061.

The spelling of 320217 in words is "three hundred twenty thousand, two hundred seventeen", and thus it is an iban number.